EP2765247B1 - Siphonspülvorrichtung - Google Patents

Siphonspülvorrichtung Download PDF

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Publication number
EP2765247B1
EP2765247B1 EP14154130.0A EP14154130A EP2765247B1 EP 2765247 B1 EP2765247 B1 EP 2765247B1 EP 14154130 A EP14154130 A EP 14154130A EP 2765247 B1 EP2765247 B1 EP 2765247B1
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EP
European Patent Office
Prior art keywords
air
flushing
tube
inlet
siphonic
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EP14154130.0A
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English (en)
French (fr)
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EP2765247A1 (de
Inventor
Stefan Danielsson Spogardh
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Geberit International AG
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Geberit International AG
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/02—High-level flushing systems
    • E03D1/06—Cisterns with tube siphons
    • E03D1/12—Siphon action initiated by outlet of air
    • E03D1/125—Siphon action initiated by outlet of air in cisterns with tube siphons
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/02—High-level flushing systems
    • E03D1/14—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves
    • E03D1/141—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves in cisterns with tube siphons and with tube siphons in combination with flushing valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/02—Special constructions of flushing devices, e.g. closed flushing system operated mechanically or hydraulically (or pneumatically) also details such as push buttons, levers and pull-card therefor
    • E03D5/024—Operated hydraulically or pneumatically
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/02—Special constructions of flushing devices, e.g. closed flushing system operated mechanically or hydraulically (or pneumatically) also details such as push buttons, levers and pull-card therefor
    • E03D5/09—Special constructions of flushing devices, e.g. closed flushing system operated mechanically or hydraulically (or pneumatically) also details such as push buttons, levers and pull-card therefor directly by the hand

Definitions

  • the present invention relates to a siphonic flushing device. More particularly, the present invention relates to a dual flush siphonic flushing device, as well as to a toilet including such flushing device.
  • Siphonic flushing devices have been available on the market for many years. Operating on the general principle of a siphon, such flushing device generally consists of a tubular bend being submerged into water enclosed within a water cistern.
  • flushing apparatuses are e.g. described in AU437147 , GB618980 , and US1604759 .
  • Double siphons include a tube being bent to form an M-shape. Hence, a water trap is formed between the inlet and the outlet such that air may be compressed between the inlet and the water trap.
  • the siphon will draw water from the cistern until the water level of the cistern is below the inlet.
  • an inlet valve After flushing an inlet valve will open for refilling the cistern. As the water level of the cistern rises, water will also start to fill the tube of the flushing device. As the vent valve is now closed, air will be compressed within the bend. Filling of water is finished when a specific water level is reached, whereby a subsequent flushing sequence may again be initiated.
  • a siphonic flushing device provides a number of advantages compared to other flushing devices since there is no need for a moveable outlet valve.
  • different solutions on the market still have some major drawbacks, especially when it comes to siphonic flushing devices having dual-flush capabilities, i.e. configurations allowing for small and large volume flushes.
  • EP1640515 describes a double flush siphon flushing system.
  • a vent valve allows compressed air to escape whereby the flushing sequence is performed.
  • venting is controlled such that different volumes of water are discharged.
  • this system provides a dual flush functionality.
  • a number of disadvantages are associated with this kind of solution. As an example, it does not allow the flush volumes to be easily changed.
  • a cistern divider is provided for changing the large volume flush from 6 liters to 9 liters; however no adjustment between these values is possible.
  • this particular solution may not fit different markets having different standards for flushing volumes.
  • GB2276640A discloses a siphonic device according to the preamble of claim 1.
  • the present invention seeks to mitigate or eliminate the above-identified deficiencies and solves at least the above mentioned problems by providing a siphonic flushing device with a dual flush functionality.
  • An idea of the present invention is to provide a siphonic flushing device according to claim 1 having an air intake device in connection with the siphon tube such that air intake may be controlled for terminating the flushing sequence at a specific flushing volume.
  • a siphonic flushing device comprises a tube extending from an open inlet end to an open outlet end via a bend, the bend being arranged downstream and vertically above said inlet end and upstream and vertically above said outlet end in use, wherein a water trap is formed between said bend and said outlet end in the flow direction, and wherein said outlet end is arranged downstream and vertically below said inlet end in use; and an air intake device having an air outlet connected to said tube at the bend and being configured to allow air to exit via said air outlet an enter said tube for the termination of an ongoing flush, the siphonic flushing device further comprising a venting device connected to said bend for allowing air entrapped within said bend to escape for initiating a flush.
  • the air intake device further comprises a first air inlet and a second air inlet, said first inlet having an opened state in which air is introduced into the air intake device and a closed state, the first air inlet being arranged vertically below said air outlet in use, and wherein a first flushing volume is achieved when the first air inlet is opened thus allowing air to flow into the tube, and a second flushing volume being larger than the first flushing volume is achieved when the first air inlet is locked in a closed position such that air is introduced via the second air inlet thus allowing air to flow into the tube.
  • the air outlet of said air intake device may preferably be connected to said bend.
  • a sub-pressure will be present during flushing due to the flow of water. Since air is introduced in the air inlet as the water level within the cistern lowers, flushing will always be terminated as air will be drawn into the bend due to the sub-pressure.
  • the first air inlet of said air intake device may comprise a float valve being moveable in a vertical direction, which is advantageous in that the air inlet will open as soon as the water lever inside the cistern lowers to a predetermined level, set by the float valve.
  • the volume of a large flush may be controlled such that a large volume flush not necessarily must correspond to the water level inside the cistern being lowered below the tube inlet end. Further, by terminating a large volume flush by introducing air into the bend via the second air inlet, undesired sound, such as bubbling noise is reduced. This is due to the fact that the second air inlet, having a diameter substantially less than the diameter of the tube inlet, will provide smaller air bubbles entering the tube at a higher level.
  • the second air inlet may comprise an open conduit end having an oblique cut. This further decreases unwanted noise associated with introducing air into the tube.
  • the vertical position of said air intake device may be adjustable relative the tube, which is advantageous in that the volumes corresponding to large and small flushes may be easily adjusted.
  • the venting device may be connected to flush initiating means such that said venting device opens when a user operates said flush initiating means. Hence, immediate flushing is provided as soon as the user requests such action.
  • the flush initiating means may preferably comprise two different push buttons, or rocker buttons or lift buttons, mechanically connected to said venting device.
  • the flush initiating means may be mechanically connected to said air intake device, which is advantageous in that the choice of push button may control activation of the first air inlet.
  • the first air inlet of the second venting device may be locked in a closed position when a user initiates a flushing sequence of a first volume, such that flushing is terminated when the water level outside the tube is below the vertical lever of the second air inlet of the air intake device.
  • first air inlet of the second venting device may be released from said closed position when a user initiates a flushing sequence of a second volume being smaller than said first volume, such that flushing is terminated when the water level outside the tube is below the vertical lever of the first air inlet of the air intake device.
  • a water cistern is provided enclosing a siphonic flushing device according to the first aspect.
  • a WC suite is provided comprising a water cistern according to the second aspect.
  • the flushing device 100 generally includes a hollow tube 110, a venting device 200, as well as an air intake device 300. Additional components preferred for a proper functionality includes a flush initiating means 120 and a support structure 130 for fixation of the flush initiating means 120 and possibly also an inlet valve.
  • the entire flushing device 100 is intended to be arranged inside a water cistern, such that water enclosed in the cistern may be flushed into an associated toilet bowl by means of the flushing device 100.
  • the hollow tube 110 forms a water conduit extending from an open inlet 112 to an open outlet 114.
  • the tube 110 extends vertically upwards from the inlet 112 to a bend 116 from which the tube 110 extends downwards to a second bend forming a water trap 118.
  • the tube 110 has an M-shape.
  • the tube 110 is preferably twisted around the vertical axis as is shown in Fig. 1 .
  • the tube 110 is manufactured as two or more parts which may be easily connected by a snap-lock, threads, or similar. Further, ribs 119 may be provided for increasing the stability of the tube 110 and arranged to connect different portions of the outer surface of the tube 110. However the tube 110 may also be manufactured by welding two or more parts together or it may be formed as one part by means of blow molding technology.
  • the outlet 114 is connected to an inlet port of a WC bowl (not shown).
  • the outlet 114 is arranged vertically below the inlet 112.
  • the flushing device 100 is configured to be arranged within a water cistern (not shown), e.g. a separate cistern, on a WC suite, or enclosed within the back rest of a WC bowl or enclosed within a wall supporting a wall hung WC.
  • a water cistern e.g. a separate cistern
  • the support structure 130 has portions 132 for engagement with corresponding fastening portions of the cistern.
  • the flushing device 100 is aligned within the cistern such that the outlet 114 of the tube connects with inlet port to the WC bowl. In such position, the inlet 112 of the tube 110 is arranged at a certain vertical distance from the bottom of the cistern such that water present in the cistern may flow through the inlet 112.
  • water is enclosed within the cistern up to a predefined level.
  • the predefined water level corresponding to a full cistern, is arranged above the bend 116.
  • the water trap 118 also accommodates water from a prior flush, such that air is entrapped between the bend 116 and the water trap 118. Since the water within the tube 110 (i.e. water coming from the inlet 112) has forced the air within the tube 110 to move towards the bend and the water trap 118, this air is compressed.
  • a venting device 200 is configured to release the air entrapped within the bend 116 such that the pressure is reduced, whereby cistern water will start to flow into the tube 110 and over the bend 116, into the water trap 118, and subsequently out trough the outlet 114.
  • Flushing is aborted when the water level in the cistern is below the inlet 112 of the tube 110, or when air is again introduced into the tube 110. Upon this, an inlet valve will open whereby the cistern is again filled with water returning the flushing system to a state where it is ready to begin flushing.
  • a venting device 200 is preferably mechanically linked to the flush initiating means 120.
  • the flush initiating means 120 may e.g. include two push buttons 121a, 121b, which when pressed down provides a small volume flush or a large volume flush, respectively. It should however be appreciated that the push buttons may be replaced by rocker buttons or lift buttons, providing the same functionality of activating flushing sequences of different water volumes.
  • a tilting of a lever construction 122 When one of the buttons 121a, 121b is pressed down a tilting of a lever construction 122 will cause a release action on the venting device 200 such that it opens, thus allowing air compressed within the bend 116 to escape. Releasing the air will thus create a sub-pressure within the tube 110 which will draw water from the inlet 112, over the bend 116, and out through the outlet 114. That is, releasing air will start flushing.
  • the lever construction 122 locks the venting device 200 in a closed position thus preventing it from open and from releasing entrapped air.
  • the push buttons 121a, 121b are preferably accessible from the outside of the water cistern such that they are readily available for a user.
  • Figs. 2a-c side views and cross sectional views of the venting device 200 are shown.
  • the venting device is arranged at the bend 116 and includes a fluid connection 202 at the highest position of the tube 110.
  • the fluid connection 202 extends upwards as a hollow conduit 204 which is surrounded by a hollow housing 206 being sealed against the outer surface of the tube 110.
  • the hollow housing 206 forms an annular volume 207 delimited by the hollow conduit 204. During cistern filling, this annular volume 207 is at least partly filled with water.
  • the hollow conduit 204 has an open upper end 208 which may be sealed against a piston 210 being moveable and engagable by a respective motion of the lever construction 122.
  • the piston having a cylindrical shape with a closed upper end, extends into the water of the annular volume 207 thus forming a water trap preventing air inside the tube 110 to escape.
  • Fig. 2b a zoomed-in view of the venting device 200 is shown.
  • the piston 210 is thus pressed down such that the sidewall of the piston 210 extends into the water of the annular volume 207. Air inside the bend 116 may thus not escape, whereby flushing is prevented.
  • the lever construction 122 will unlock the piston 210 whereby the compressed air will be able to force the piston 210 upwards to allow escape. This is shown in Fig.
  • the lever construction 122 is preferably spring biased towards it idle position such that the piston 210 will automatically return to the position where the piston 210 is submerged into the water of the annular volume 207 and blocked from moving upwards. Hence, the piston 210 forms an open-ended cylinder.
  • venting device 200 provides a mechanical connection between the flush initiating means 120 and the tube 110, such that upon initiating a flush, the venting device 200 unlocks the piston 210 whereby the compressed air inside the bend 116 is allowed to escape, thereby starting the flushing.
  • the venting device 200 operates in the same manner independently of a large or small flush.
  • the air intake device 300 is arranged outside the tube 110 and has an air outlet connected to the tube 110 at the bend 116 at a position close to the venting device connection 202 (shown in Fig. 2a ).
  • the air intake device 300 is connected to the tube 110 via a flexible hose 302 (see e.g. Fig. 5b ) such that the vertical position of the air intake device 300 relative the tube 110 may be easily adjusted.
  • some sort of fastener such as a guiding rod, may be provided along the outer surface of the tube 110 to which the air intake device 300 may be attached at different vertical positions.
  • the air intake device 300 includes two separate air inlets 304, 306 arranged at different vertical positions.
  • the air inlets 304, 306 are provided such that the first inlet 304 will be opened when a small volume flush is initiated, whereby the second air inlet 306 is operational when a large volume flush is initiated.
  • Fig. 3a the air intake device 300 is shown where a large volume flush is activated.
  • a mechanical link 310 connected to the lever construction 122 will cause a mechanical locking action on the air intake device, as shown in Fig. 3c .
  • a float valve 320 also shown in Fig. 3c ) associated with the first air inlet 304 will be locked in its position thus keeping the first air inlet 304 closed.
  • the locking action may preferably be provided by a protrusion on the air intake device 300 being engagable with a recess of the mechanical link 310 such that when the mechanical link 310 is in a first position, the recess prevents the float 320 of the air intake device 300 from moving downwards.
  • the mechanical link 310 moves corresponding to a small volume flush, the recess will no longer engage the protrusion of the air intake device such that the float 320 of the air intake device 300 is free to move downwards.
  • the water level inside the cistern will lower until it goes below the vertical position of the second air inlet 306. Hence, air will be allowed to flow into the bend 116 whereby flushing is terminated.
  • the air intake device 300 operates by allowing or preventing a float 320 from moving with the water level inside the cistern.
  • a large volume flush is initiated the float 320 is locked in an upright position whereby the upper air inlet 304 is closed. Even when the water level inside the cistern lowers during flushing, the float 320 will remain in its upper position thus keeping the air inlet 304 closed.
  • a small volume flush is initiated the float will no longer be locked due to a different movement of the mechanical link 310 (please note that the venting device 200 is always actuated independently of large or small volume flush initiation).
  • the float 320 will move correspondingly, thus exposing the air inlet 304 when the water level is below the vertical position of the air inlet 304.
  • Fig. 4 the flushing device 100 is shown wherein a small volume flush is initiated.
  • the mechanical link 310 will release the float valve 320 of the air intake device 300 at the same time as the venting device 200 is maneuvered, i.e. when the flush starts.
  • the float valve 320 will also move downwards.
  • the movement of the float valve 320 will open the first air inlet 304 such that air will be allowed to enter the bend 116 for terminating the flushing sequence.
  • the float valve 320 may include a floating body 322 being slidable on a vertical venting tube 324.
  • the floating body 322 which is released upon initiating a small volume flush, will move downwards along with the water level during flushing due to gravity. As the floating body 322 lowers, it will eventually allow air to enter the vertical venting tube 324 (see Fig. 5b ).
  • a valve seat 326 is provided on the upper part of the vertical venting tube 324 adjacent to and connected to the flexible hose 302.
  • the valve seat 326 has tapered surfaces 328 engagable with corresponding tapered surfaces 330 on the inner side of the floating body 322.
  • a small slit preferably annular, is provided between the vertical venting tube 324 and the valve seat 326 for allowing air flow into the valve seat 326, as indicated by the arrow in Fig. 5b .
  • flushing will be terminated as air is allowed to enter the vertical venting tube 324 and escapes upwards into the bend 116 via the valve seat 326 and the flexible hose 302.
  • the floating body 322 will move upwards and again seal the holes in the vertical tube 324.
  • the second air inlet 306 may preferably be provided with an oblique cut, which has been proven to reduce undesired sound when air is introduced for terminating the flushing sequence. As previously described, reduced diameter of the air intake pipe will reduce the size of air bubbles thus reducing the generated sound. The second air inlet 306 is operational only when the float 320 is locked, i.e. when initiating a large volume flush.
  • the air intake device 300 thus provides a highly advantageous construction for allowing two different volumes of flushing.
  • the floating body 322 is locked or unlocked depending on the last flush initiating being either one of the buttons 121a, 121b, A new flush initiation will directly cause a corresponding action on the floating body, i.e. causing it to be locked or unlocked.
  • the present invention may be used for WC bowls suspended from a wall structure as well as WC bowls securely attached to the floor; or separate flushing cisterns arranged inside or outside a wall.
  • Vertical flushing buttons providing mechanical activation of the flushing will only requiring minor modifications for connecting the manual flush buttons with the venting device and the air intake device.
  • all references to "upper”, “lower”, “above”, “below”, “upwards, downwards”, or similar should be interpreted as a position during normal use, i.e. when the flushing device is mounted in a water cistern.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Claims (12)

  1. Siphondoppelspülvorrichtung, umfassend
    ein Rohr (110), das sich von einem offenen Einlassende (112) über eine Krümmung (116) zu einem offenen Auslassende (114) erstreckt, wobei die Krümmung bei Gebrauch stromabwärts und vertikal oberhalb des Einlassendes (112) und stromaufwärts und vertikal oberhalb des Auslassendes (114) angeordnet ist, wobei zwischen der Krümmung (116) und dem Auslassende (114) in der Strömungsrichtung eine Wasserfalle (118) ausgebildet ist und wobei das Auslassende (114) bei Gebrauch stromabwärts und vertikal unterhalb des Einlassendes (112) angeordnet ist; und
    eine Lufteinlassvorrichtung (300) mit einem Luftauslass, der an der Krümmung (116) mit dem Rohr (110) verbunden und so ausgestaltet ist, dass Luft über den Luftauslass austreten und in das Rohr (110) eintreten kann, um eine laufende Spülung zu beenden,
    wobei die Siphonspülvorrichtung ferner eine Entlüftungsvorrichtung (200) umfasst, die mit der Krümmung (116) verbunden ist, um zu erlauben, dass innerhalb der Krümmung (116) eingeschlossene Luft entweichen kann, um eine Spülung auszulösen,
    dadurch gekennzeichnet, dass die Lufteinlassvorrichtung (300) ferner einen ersten Lufteinlass (304) und einen zweiten Lufteinlass (306) umfasst, wobei der erste Einlass (304) einen geöffneten Zustand, in dem Luft in die Lufteinlassvorrichtung (300) eingeleitet wird, und einen geschlossenen Zustand aufweist, wobei der erste Lufteinlass bei Gebrauch vertikal unterhalb des Luftauslasses angeordnet ist und
    wobei ein erstes Spülvolumen erreicht wird, wenn der erste Lufteinlass (304) geöffnet ist und so erlaubt wird, dass Luft in das Rohr (110) strömt, und ein zweites Spülvolumen, das größer als das erste Spülvolumen ist, erreicht wird, wenn der erste Lufteinlass (304) in einer geschlossenen Position verriegelt ist, so dass Luft über den zweiten Lufteinlass (306) eingeleitet und so erlaubt wird, dass Luft in das Rohr (110) strömt.
  2. Siphonspülvorrichtung nach Anspruch 1, wobei der Luftauslass der Lufteinlassvorrichtung (300) mit der Krümmung (116) verbunden ist.
  3. Siphonspülvorrichtung nach Anspruch 1 oder 2, wobei der erste Lufteinlass (304) der Lufteinlassvorrichtung (300) ein Schwimmerventil umfasst, das in vertikaler Richtung bewegbar ist.
  4. Siphonspülvorrichtung nach einem der vorangehenden Ansprüche, wobei der zweite Lufteinlass (306) ein offenes Leitungsende mit einem Schrägschnitt umfasst.
  5. Siphonspülvorrichtung nach einem der vorangehenden Ansprüche, wobei das Rohr (110) einen Träger umfasst, mit dem die Lufteinlassvorrichtung (300) so verbunden ist, dass die vertikale Position der Lufteinlassvorrichtung (300) relativ zu dem Rohr (110) einstellbar ist.
  6. Siphonspülvorrichtung nach einem der vorangehenden Ansprüche, wobei die Entlüftungsvorrichtung (200) mit einem Spülauslösemittel (120) so verbunden ist, dass ein Kolben (210) der Entlüftungsvorrichtung (200) entriegelt wird und sich öffnen kann, wenn ein Benutzer das Spülauslösemittel (120) betätigt.
  7. Siphonspülvorrichtung nach Anspruch 6, wobei das Spülauslösemittel (120) zwei unterschiedliche Druckknöpfe (121a, 121b) umfasst, die mechanisch mit dem Kolben (210) der Entlüftungsvorrichtung (200) verbunden sind.
  8. Siphonspülvorrichtung nach Anspruch 6 oder 7, wobei das Spülauslösemittel (120) mechanisch mit der Lufteinlassvorrichtung (300) verbunden ist.
  9. Siphonspülvorrichtung nach einem der vorangehenden Ansprüche, wobei der erste Lufteinlass (304) der Lufteinlassvorrichtung (300) so ausgestaltet ist, dass er in einer geschlossenen Position verriegelt ist, wenn ein Benutzer eine Spülsequenz mit einem ersten Volumen auslöst, sodass das Spülen beendet wird, wenn der Wasserstand außerhalb des Rohrs (110) unterhalb des vertikalen Niveaus des zweiten Lufteinlasses (306) der Lufteinlassvorrichtung (300) liegt, wodurch Luft in das Rohr (110) strömen kann.
  10. Siphonspülvorrichtung nach Anspruch 9, wobei der erste Lufteinlass (304) der Lufteinlassvorrichtung (300) so ausgestaltet ist, dass er aus der geschlossenen Position freigegeben wird, wenn ein Benutzer eine Spülsequenz mit einem zweiten Volumen, das kleiner als das erste Volumen ist, auslöst, so dass das Spülen beendet wird, wenn der Wasserstand außerhalb des Rohrs (110) unterhalb des vertikalen Niveaus des ersten Lufteinlasses (304) der Lufteinlassvorrichtung (300) liegt, wodurch Luft in das Rohr (110) strömen kann.
  11. Wasserbehälter mit einer Siphonspülvorrichtung nach einem der vorangehenden Ansprüche.
  12. WC-Garnitur, umfassend einen Wasserbehälter nach Anspruch 11.
EP14154130.0A 2013-02-06 2014-02-06 Siphonspülvorrichtung Active EP2765247B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1350144 2013-02-06

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EP2765247A1 EP2765247A1 (de) 2014-08-13
EP2765247B1 true EP2765247B1 (de) 2021-10-06

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DK (1) DK2765247T3 (de)
ES (1) ES2899993T3 (de)
PT (1) PT2765247T (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7205899B2 (ja) * 2019-05-27 2023-01-17 株式会社砂▲崎▼製作所 高速車両用水封装置
WO2022016459A1 (zh) * 2020-07-23 2022-01-27 厦门恩沐智能科技有限公司 一种马桶冲刷装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU437147B2 (en) * 1968-03-18 1973-06-22 Squair Corporation Limited Siphon valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1604759A (en) * 1925-11-17 1926-10-26 Harold B Richards Siphon
GB618980A (en) * 1946-11-15 1949-03-02 Eric Bayly Improvements in syphonic flushing apparatus
GB2276640B (en) * 1993-03-30 1996-07-31 Alan David Somerfield Improvements in or relating to cisterns
SE504888C2 (sv) * 1993-06-22 1997-05-20 Goesta Leopold Hammarstedt Spolsystem för WC-stolar
EP1640515A1 (de) 2004-09-27 2006-03-29 MEPA- Pauli und Menden GmbH Spülkasten mit zusätzlicher Lufteinleitung, sowie Verwendung eines solchen Spülkastens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU437147B2 (en) * 1968-03-18 1973-06-22 Squair Corporation Limited Siphon valve

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EP2765247A1 (de) 2014-08-13
DK2765247T3 (da) 2021-12-20
PT2765247T (pt) 2021-12-16
ES2899993T3 (es) 2022-03-15

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